Race equality campaigner Doreen Lawrence said she wants to use her House of Lords peerage to "give a voice to ordinary people".
The mother of murdered teenager Stephen Lawrence also admitted she was "nervous" about her new role as a Labour peer.
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Only half of the 4.2 million of eligible couples are applying for a marriage allowance that could be saving them hundreds each year.
Analysts said the outlook for the UK's public finances had "weakened significantly" with Brexit likely to put more pressure on the economy.
Save Your Uber in London was set up after it was announced the firm would not have its licence renewed when it expires next week.